I don't doubt what you say, but for me (and it doesn't sound like I'm alone), I'm unconvinced that this ball or other 'rare' balls, can do something that none of the other 100 balls on the market can't. Certainly not to justify plunking down two to three times what any of those other balls cost.
That said, I'd buy one in a heartbeat at regular price to resell. I don't have to understand it to take advantage of it. Which is probably why we have a crap load of beanie babies in a hermetically sealed container (some bets are better than others).